The Alesis SR-18 Drum Machine has all of the effects and potential that todays musicians desire. Alesis launched the popular SR-16 Drum Machine in 1990 and the SR-18 builds on this powerful technology. The SR-18 Drum Machine is loaded with 500 percussion and 50 bass sounds. With this kind of variety, you can play everything from classic rock to country to hip-hop. The SR-18 has features like reverb, compression, and EQ. It contains a Mute/Solo function for parts and its Pattern Play Mode allows for patterns to be generated directly from the pads. The Alesis SR-18 Drum Machine can be powered by AC or batteries so that you have maximum portability along with its infinite capabilities.